Pic16f88 unipolar stepper motor drive

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zopah

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Hello,
am making a small cnc for my lab.however i would like to use a pic16f88 to controller a 5 wire unipolar motor that uses 12 volts. I would like to use KCAM software to control the stepping motor. I have written some assembler code using MPLAB.When i simulate the code in the simulator in MPLAB, the code doesnt output to Port B as intended when an interrupt occurs on the RBO pin caused by a pulse train from the KCAM software.could someone help me sort out this code please.... i have attached the notepad file with the code.....
 

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